Hanoi UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index11.6
- Avg Clouds75%
- Max Temp31.8 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Hanoi, Vietnam 
will reach a high of 11.6 today. This means a extreme level of sun exposure. See our tips below to stay safe!
Last checked: 2025-08-23
Hourly Forecast Chart
Today's Safety Tips
Extreme danger! Avoid being in the sun, especially during midday. If you go out, cover up with clothing, a hat, and sunglasses, and use plenty of sunscreen.
Hanoi's UV Index
Hanoi's UV index is usually moderate to high, peaking around midday especially in spring and summer months. UV levels tend to be lower during the rainy season in late summer and autumn.
Weather Seasons
Hanoi has hot, humid summers with heavy rain from May to September. Winters from November to February are cooler and drier. Spring and autumn are mild and pleasant with less rain.
Hanoi's Climate
Compared to other parts of Vietnam, Hanoi experiences cooler winters due to its northern location. Its rainy season is more concentrated than in southern Vietnam. Neighboring countries like Laos and Cambodia have similar tropical monsoon climates but with less winter chill.
Hourly UV Index Trend
See the UV index hour by hour for Hanoi. When the level is high, it's smart to find some shade.
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